Conferences
  1. Home
  2. Structure
  3. Materials science powder and composite materials and coatings
  4. 25. Physical chemistry and refractory oxides technology department
  5. Lakyza S.
  6. Article

Liquidus surface for the Аl2О3—HfO2—Gd2O3 phase diagram

Y.Tyshchenko,
 
M.S.Glabay,
 
V.V.Tkach,
 
S.Lakyza
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Modern Problems in Physical Materials Science - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2012, #21
http://www.materials.kiev.ua/article/2081

Abstract

The liquidus surface for the Al2O3—HfO2—Gd2O3 phase diagram was constructed for the first time. The maximum temperature in the system is 2820 °С and it corresponds to the melting point of HfO2 compound. The minimum temperature in the system is 1670 °С and it corresponds to three-phase eutectic Al2O3 + F-HfO2 + GdAlO3 (E3). New phases and remarkable regions of solid solutions were not found in the Al2O3—HfO2—Gd2O3 system. Since crystallization in the system finishes in eutectic reactions, it allows realizing in these materials unique properties of ternary T- and F-HfO2-based solid solutions combined with properties of other phases.


ALUMINA, CERAMIC HFO2, CERAMICS, EUTECTIC MATERIALS, GADOLYNIA, STATE DIAGRAM

Publications